Key to the Atanygnathus species of Réunion

1 Body perspicuously bi-coloured, pronotum distinctly lighter than head. Elytra longer, wings fully developed............. 2

- Coloration of body more uniform, generally brunneous to piceous, pronotum not distinctly lighter than head, wings missing absent.............................................................................. A. poussereaui sp. n.

2 Aedeagus slim, strongly narrowed apically.................................................. A. variegatus Lecoq

- Aedeagus wider, broadly rounded apically...................................................... A. gomyi Lecoq